Finding the Fourth Proportional to 1,941.03, 2,912.09 and 642.54
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Solution
The fourth proportional to 1,941.03, 2,912.09 and 642.54 is: 963.99
Step by Step Solution
- Step 1: Write the proportion equation
1,941.03 : 2,912.09 = 642.54 : x - Step 2: Convert to fraction form
1,941.03/2,912.09 = 642.54/x - Step 3: Cross multiply
1,941.03x = 2,912.09 × 642.54 - Step 4: Simplify right side
1,941.03x = 1,871,131.10 - Step 5: Solve for x
x = 1,871,131.10/1,941.03 - Step 6: Final answer
x = 963.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.